Cheese
To enhance your vitamin B12 levels in a healthy yet tasty way, you can always nibble on some low-fat cheese. Forty grams serving of low-fat cheddar cheese gives almost 69 kcals and 0.49 mcg of vitamin B12 which is 20% of the daily value (DV) of vitamin B12. As cheese is an excellent source of vitamin B12, it also provides calcium, vitamin D, and protein.